mineral
Small translucent mineral fragment, possibly quartz
Quartz (SiO₂), tentative identification
AI-generated identification · may be incorrectPale tan-gray, translucent, with a vitreous luster and irregular fracture; quartz has Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65. The blurry image prevents reliable confirmation or distinguishing it from calcite or feldspar.
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Physical properties
Pale tan-gray, translucent, with a vitreous luster and irregular fracture; quartz has Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65. The blurry image prevents reliable confirmation or distinguishing it from calcite or feldspar.
Formation & geological history
If quartz, it commonly forms in hydrothermal veins, igneous rocks, and sedimentary deposits, crystallizing throughout geologic time. The fragment appears naturally broken or possibly collected from gravel or a mineral specimen.
Uses & applications
Quartz is used in glass, ceramics, electronics, abrasives, construction aggregate, and jewelry. This tiny fragment has negligible commercial value unless part of a documented or unusually attractive specimen.
Geological facts
Glassy luster and inability to scratch it with a steel knife would support quartz; effervescence in dilute acid would instead suggest calcite. A close, well-lit image and hardness, streak, or acid tests are needed for confident identification.
Field identification & locations
Common worldwide, especially in Brazil, Madagascar, the United States, and hydrothermal vein districts. Estimated value: under $1 for an unidentified fragment; roughly $1–$10 if confirmed as an attractive small quartz crystal.
